"plat_id" is always non-NULL here. There is a zero element on the end
of the m25p_ids[] array and if we hit the end of the loop then plat_id
points to that.
This would lead to a NULL pointer dereference later on in the function.
Signed-off-by: Dan Carpenter <error27 at gmail.com>
diff --git a/drivers/mtd/devices/m25p80.c b/drivers/mtd/devices/m25p80.c
index 83c9086..6f512b5 100644
--- a/drivers/mtd/devices/m25p80.c
+++ b/drivers/mtd/devices/m25p80.c
@@ -793,7 +793,7 @@ static int __devinit m25p_probe(struct spi_device *spi)
break;
}
- if (plat_id)
+ if (i < ARRAY_SIZE(m25p_ids) - 1)
id = plat_id;
else
dev_warn(&spi->dev, "unrecognized id %s\n", data->type);